An electrician twisted a copper single-conductor wire with a silver metal stranded wire, with one copper core. Is the connection secure?
Hello. Papered wallpaper. LED lights in the stretch ceiling blink. What to do with it?
Can I install a time relay on a 9 kW heating boiler? If so, is it possible to set it to zero, and not to phase?
There was a problem when connecting a three-arm chandelier, at first it didn’t work, and after the second attempt it knocks out an automatic machine. Tell me the connection diagram.
There is a pumping station with a capacity of 1100 watts. The wire will stretch 3x2.5 square meters. mm., automatic machine at 16a. Is the RCD suitable for 25A 30mA? What type of leakage current is A or AC?
When I connected the WS2812B LED strip to the computer, I closed the wires, the computer turned off, and after that only 1 LED is on. What is the reason and what to do?
Is it possible in the room where the gas boiler will be installed to install an electricity meter and a shield with automatic devices, provided that everything is in the protective boxes?
Given the task, make a diagram and select the conductors. Help me to understand. Tell the program and where to start drawing up the scheme.
Three-phase motor rotates the gearbox. The motor is controlled by a contactor. What happens if the engine jams?
Is it possible to connect a fan parallel to the light if the switch breaks the zero? When the switch is off, the phase is on 2 wires, there is no way to redo it.
There was a problem connecting the washing machine on a ship with a mains frequency of 60 Hz. Advise a single-phase frequency converter 50-60 Hertz.
When you turn on and turn off the old (35 years old) refrigerator, the screen goes blank for a few seconds, then restores. What can be done to solve the problem?
Hello! I want to heat houses with energy received from a wind generator. What should be the capacity of the heaters for 120 m²? And what power does a windmill need?
RCD should be before the machine or after? How to connect? In what order are the protective devices installed in the electrical panel?
There are three identical power supplies, you need to increase the output power. Can they be connected in parallel or in series? How to do it right?
How to connect the wires in the distribution box, if there are wires without grounding, the power wire is two two-gang switch off and two lighting wires?
The clock on the stove starts to blink and something clicks! Immediately after this, the stove, sink and stove begin to “pinch”. Turned off the machine did not help. Posting New.
Hello, I plan to take a hob with two burners with a total power of 3 kW, a 3x4 mm cable and an automatic machine for 20A will be enough?
I want to install a light bulb in the yard with a 10 W LED, the distance from it to the shield is 15 m, I want to throw the P270 field wire through the air. Can this be done?
Lighting problems started. I measure the voltage at the input of all three phases. At the first 20 volts, why? On the other two 380. Found that at the input from the TP disappears zero.
How to remotely disable 2 of 3 machines? What are the devices or other solutions and schemes for remote control of circuit breakers?